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+--- Thread: How to make quality mini images for epub publishing? (/Thread-How-to-make-quality-mini-images-for-epub-publishing)
How to make quality mini images for epub publishing? - MichelCrokinole - 12-13-2021
Hi everyone,
This is my first question on this forum.
I'm writing an illustrated text book. Most images are 500 x 500 pixels and they look great. Now I want to make two images about the size of a standard computer desktop icon. I know, not a great reference.
I tried a 500 x 500 pixel image and resized it to 128 x 128 pixels.
I tried making the image 128 x 128 pixels right from the start.
The results are both the same. When I insert the image in a MS Word document , this image is blurry. When I convert the MS Word document to epub or even PDF, the image is even more blurry.
Can anyone tell me what to do?
Thank you
RE: How to make quality mini images for epub publishing? - rich2005 - 12-13-2021
Think about it, scaling down from 500 x 500 (250,000) pixels to 128 x 128 (16,384) pixels throws away 90% of the image information. Might be OK with a simple image but anything complicated and interpolation makes the image blurry.
...but then, how are you viewing the scaled down 'icon' ? Zoom in and will look terrible, at normal size might look OK.
What you can try is setting interpolation to None in the Image -> Scale Image dialogue. That gives an image with "jagged edges" usually you try and avoid those. Up to you to decide.
[attachment=7226]
For the 'icons' left side is 'NoHalo' interpolation , right side is 'None'
RE: How to make quality mini images for epub publishing? - MichelCrokinole - 12-14-2021
(12-13-2021, 09:20 AM)rich2005 Wrote: Think about it, scaling down from 500 x 500 (250,000) pixels to 128 x 128 (16,384) pixels throws away 90% of the image information. Might be OK with a simple image but anything complicated and interpolation makes the image blurry.
...but then, how are you viewing the scaled down 'icon' ? Zoom in and will look terrible, at normal size might look OK.
What you can try is setting interpolation to None in the Image -> Scale Image dialogue. That gives an image with "jagged edges" usually you try and avoid those. Up to you to decide.
For the 'icons' left side is 'NoHalo' interpolation , right side is 'None'
Thank you for the information. I will try what you say.